Problem with getting off idle with Stock Rover MEMS

[Rich M]

Rover MPi MEMS certainly uses TPS (yes, it is a pot) to deliver accel.
enrichment, MAP is used for steady state running.
Does the engine behave the same if you disconnect the TPS?
I have had brief experience with MEMS MPi (Rover 214, but same system),
running with TPS disconnected produces effect very similar to what you
describe, runs fine steady state but stumbles badly with change of throttle
position. Disconnecting MAP instead has the opposite effect, runs like a
bag-o-nails steady state but goes fine if you drive like a nutter and keep
the throttle movin!
Have you tried measuring the pot resistance with a multimeter?

Rich

> -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of Ade + Lamb Chop
> Sent: 10 April 2000 19:49
> To: diy_efi at diy-efi.org
> Subject: Re: Problem with getting off idle with Stock Rover MEMS
>
>
> At 01:40 10/04/00, you wrote:
> >At 09:48 PM 8/4/2000 +0100, you wrote:
> >>I have a stock Mpi Rover mini. Getting the engine off idle is difficult,
> >>you give the throttle a tap and the engine hestates then comes
> up. If you
> >>tap the throttle several times you can almost get the engine to stop.
> >>Suggestions?

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